Corrosion behavior of modified cement-based coated steel rebar subjected to different levels of tensile loads
文献类型：期刊论文
| 作者 | Fan, Liang3; Hou, Guanhao3; Liao, Xiufen2; Shang, Huaishuai1; Liu, Nazhen3; Lu, Dongzhu3; Zhao, Xia3 ; Sun, Congtao3
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| 刊名 | JOURNAL OF BUILDING ENGINEERING
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| 出版日期 | 2024-08-15 |
| 卷号 | 91页码:24 |
| 关键词 | Cement-based coating EVA Nano-SiO2 Corrosion Steel rebar Corrosion inhibitor Corrosion Steel rebar |
| DOI | 10.1016/j.jobe.2024.109707 |
| 通讯作者 | Liao, Xiufen(Liaoxiufen@gxas.cn) ; Shang, Huaishuai() |
| 英文摘要 | Polymer-modified cement-based coating can provide corrosion protection for steel rebar. However, after the action of the tensile load, the connection between the polymer and the cement matrix was weakened, thus reducing its corrosion resistance. In this study, silica fume, nano-SiO2, and corrosion inhibitor were used to modify EVA (Ethylene Vinyl Acetate Copolymer) and cement-based coatings. Electrochemical experiments were used to evaluate the corrosion behavior of coated steel rebar after the action of different levels of tensile loads, and microscopic characterization and porosity experiments were applied to analyze the changes of microscopic properties of the coatings. The experimental results show that silica fume and nano-SiO2 produce more high-strength C-S-H gels through hydration reaction to improve the tensile properties and compactness of the coating, thus reducing the porosity and chloride ion permeability of the coating after tension. Tetrabasic-modified cement-based coated steel rebar with EVA, silica fume, nano-SiO2, and amino-alcohol corrosion inhibitor displayed the highest coating resistance and the lowest corrosion current density under the action of tensile load. Experimental results proves that nano-SiO2 enhances the tensile properties of the coating. The addition of corrosion inhibitor can further improve the compactness of the coating under tension, hinder the formation of chloride ion transport channel, and adsorb on the surface of steel rebar to improve the corrosion resistance of steel rebar. |
| WOS关键词 | NANO-SILICA ; MECHANICAL-PROPERTIES ; CONCRETE ; INHIBITOR |
| 资助项目 | Qingdao Natural Science Foundation Program[23-2-1-94-zyyd-jch] ; Shandong Provincial Natural Science Foundation Youth Program[ZR2023QE015] ; Shandong Excellent Youth Science Foundation Program[2023HWYQ-100] ; Taishan Scholars Program |
| WOS研究方向 | Construction & Building Technology ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001325844100001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/199357]  |
| 专题 | 海洋研究所_海洋腐蚀与防护研究发展中心 |
| 通讯作者 | Liao, Xiufen; Shang, Huaishuai |
| 作者单位 | 1.Qingdao Univ Technol, Sch Civil Engn, Qingdao 266033, Peoples R China 2.Guangxi Acad Sci, Inst Marine Corros Protect, Guangxi Key Lab Marine Environm Sci, Nanning 530007, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Key Lab Adv Marine Mat, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fan, Liang,Hou, Guanhao,Liao, Xiufen,et al. Corrosion behavior of modified cement-based coated steel rebar subjected to different levels of tensile loads[J]. JOURNAL OF BUILDING ENGINEERING,2024,91:24. |
| APA | Fan, Liang.,Hou, Guanhao.,Liao, Xiufen.,Shang, Huaishuai.,Liu, Nazhen.,...&Sun, Congtao.(2024).Corrosion behavior of modified cement-based coated steel rebar subjected to different levels of tensile loads.JOURNAL OF BUILDING ENGINEERING,91,24. |
| MLA | Fan, Liang,et al."Corrosion behavior of modified cement-based coated steel rebar subjected to different levels of tensile loads".JOURNAL OF BUILDING ENGINEERING 91(2024):24. |
入库方式： OAI收割
来源：海洋研究所
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